Gyratory screen, rubber munted spring support



decks being supported Figure 1.

tudinal rails 3 and Patented Feb. 1s, 1947 f UNITED ls'rii'rlazs PATENT- loirifciiz GYRAToRY SCREEN, RUBBER MOUNTED SPRING SUPPORT` WilliamPercival Cottrel l, rLos Angeles, ,CaliL My invention-relates lto a gyratory screen, rubber mounted spring support or a series of such by the same mechanisms. These decks are used for sifting, screening and for what is called panning metal values and for classications of materials.

The object of my invention is to provide a vibrating deck of simple construction' and arrangement, in which particles of materialmay be emciently separated. .p

Reference will be had to the accompanying drawing in which:

Figure 1 is a. side elevation of my vibrating deck.

Figure 2 is an Figure 1.

, Figure Bis a transverse section on line 3-.3 of

elevation of the right end of Figure 4 is a transverse section, on line y#-4 of Figure 1.

Figure 5 shows in for the vibrating of the machine.

The base oi the machine is primarily composed of the beams 2 forming as it were a iioor plan on which the rest of the mechanisms are mounted. The-vibrating 'main body of the machine is av built-up frame structure 'having the top longithe lower longitudinal rails 4 3 and the lower rails 4 are vertical bars 5 and at their end corners by the vertical bars 6. The' frame body thus outlined is supportedover thebase beams 2 through the means of diagonally arranged coil springs 1, the lower ends of which are mounted in sockets 8 which are metal cups suitably xed in permanent positions in the beams 2. In the bottom'of the sockets 8 there are rubber disks 9, see Figure 5. 8 and above the rubber disks 9 there are rubber perspective fastening, details springs used in the construction and these top rails tied together by the metal rings I3 which telescope over the'sf'plit metal e rings I l. set screws i4 which when clamp the metal rings Il tightly to the rubberpacking rings i 0 and rmly to the ends of the coil springs 1, which sustain the springs in their work- Applieation March `7, 194.5,ser'ia1No- 581,441 'uw' ,1' claim. (61.20.9415)." 'e

bases in the machine.

f the insideof the vby the main vibrating On the inside of the sockets The metal rings I3 are provided with 1 screwed home inwardly vthe top of the springs 2l ing positions inr the machine as relates to their The main -vibrating body of the machine is mounted on the top of the springs 'i by means of sockets l5 xed to the top rails 3 in which sockets are elements similar to those shown at the bottom of' the springs 1. These sockets i5 are mounted under angle blocks i6 of the side rails 3. On

sockets I1 and underneath the angle blocks I6 and around 1 there are split packing rings I0 of rubber ofthe same type as is indicated for the" bottom of the springs 1.

. In 'between the sockets i5 and on the outside of the split rubber rings I0 there are the split clamping rings i8, and these rings i8 are clamped tightly by set screws tightly to the rubber ring's- I 0 and in turn the rubber rings I0 to the tops of the springs 1 wheren body is supported over its supporting base.

Thus the main `vibrating body is supported entirely on vthe diagonally arranged mounted body of the springs l.r The diagonally arranged mounting of the springs 1 has been the resultvof extensive research and trial involving a Vast amount o f expense in arriving at the efciency of the apparatus, with the result that'the angularity of about twenty-five degrees, as is' indicated in the drawings, arrives at the best results of service of the machine and is a factor of thc novelty of the construction ofthe apparatus. l

'I'he main vibrating body of the machine is provided with a plurality of decks indicated as A, B and C and the number of these decks may be duplicated as desired for any given purpose. The bottom B may be a screen or a catch basin as desired.

. The main vibrating body of the machine is provided With the inclined frame bar 20 connected at the right angle corner 2| to an inclined angle bar 2 2 on the top surface of the main vibrating deck body. This bar 22 is substantially parallel to the twenty-five degree angle incline of the springs 1. The bars 20, 2| and 22 are duplicated on each side and at the right end of the machine, as shown in Figure 1, andthe bars 20 are connected by a cross bar 23 at the corners 2i and an additional cross bar 24' extends across at the top of the top rails 3 at the right end of the machine.

i5 there are rubber disks I ily to clamp the rings'l ticular plane The frame indicated by the bars 20, 2|, 22. 23 and 2l constitutes an independent frame secured to the top rails 3 by bolts l2 which pass through longitudinal slots in the rails 3 in a manner whereby the said frame may be moved lengthwise and thereby move the vibrating unit 25 to different longitudinal positionson that end of the machine for variations in the adjustments of the actionof the eccentricy vibrating unit 25 to meet lthe requirements which pass through the machine.

This vibrating unit 25, for the best efnciency of the machine, must be located, as shown in the drawings, at one end of the main vibrating body of `the machine. The loading unit at that end of the efficiency of the machine to cause they material to'travel across overthe deck screen with an at any other location of the vibrating unit in relation to the vibrating main bbdyoi -the machine Not only that, there springs mounted as shown ink approximating ratios as to the angularity of the springs with the vertical. Also the twenty ilve degree angle is a highly desirable approximation for the angle oi oi.' diierent ,materials oi this vibrating' machine contributes to the is a merit in using vcoil of the said vibratgreat numcan be expected to act exactly alike, and there in every step which screens as they emciency which has not been otherwise obtainable those coil springs which support the main vibrating body.

The fact that 4 l and are vibrated rapidly at times to a rate o! 2600 revolutions per minute by, the eccentric action of the vibrating unit 25 produces an eiilthe springs 1 are in coil form,

ciency that has not been heretofore obtainable,V in

machines of this class insofar as my research' has discovered.

This may be accounted torto some extent by the fact that when the upper ends lof the vcoil springs 1 vibrate, they are of vibration, and therefore vibrate the whole set of decks in a varietyoi directions to such an extent that they shake the particles of material one from the other. in an infinite number of directions, yet of small amplitude,

and in this manner separates the particles from each other with greater efliciency thancan be otherwise obtained.

The mounting of the vibratinglfdeck as'herein shown, produces an almost innite variety oi short agitations of the materials which are placed upon the screen or screens of my decks which are vibrated as I have indicated. The location of my eccentric rotary vibrating unit fixed as shown in the drawings at one end of the machine causes a more rapid travel toward that end of the machine of the materials which have been placed on the screens of the decks, than has ever taken Vcauses that end to the materials on the screen of will occur a variation in the shaking of the particles on the screens or screens slightly different those particles take along the Further, the fact that the weight of the rotating vibrating unit is loaded on the spring legs oi the machine at one end, being the discharge end, vibrate with more amplitude than the other end oi the machine in every direction in which vibration will take place of the decks oi the vibrating unit.

The vibrating deck body may, when desired, be supported from the top ranged `coil springs on will be hung by coil springs in tension, instead of being supported by coil springs in compression, as is shown in the drawings herein, and the vibrating unit located in same relative position as to the angularity oi the springs and' at one end of ing decka xed frame to which the said vibrating deck is mounted, coil springs mounted at an angle with the xed frame and with the vibrating deck, the ends ci the said coil springs mounted in metal y sockets, rubber bushings enclosing the ends of not limited to any par- `means said ends of the said coil springs through the the said springs within'the said sockets, clamping rings enclosing the said rubber bushings and for clamping the said rings tightly to the medium oi the said rubber bushings. l .WILLIAM PERCIVAIL'` CO'I'IRELL. Y narnnnnons CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 1,879,923. Deister Sept. 27, 1932 2,200,724 Robins May 14, 1940 2,246,483 Dillon June 17, 1941 2,140,172 A v Royer Dec. 13, 1938 2,157,562 Overstrom May 9, 1939 Ogden Aug. 20, 1912 move toward the discharge end.

vby the same relatively arwhich the vibrating body 

